In this lesson we are going to energize 16 lamps at the same time, with the press of a switch. After some time delay, we want the lamps to turn off one at a time, one every second, until all of lamps are de-energized. We will be using the shift instruction to accomplish this task. After we write the first network of code and download it to the simulator, we discover that the code doesn’t work quite as we expected. We correct that problem and retest only to find that we still have some code issues. Let’s open up this lesson and get started turning on and off some lamps.